Community ENT220 User guide

Brand: Community

Model: ENT220

Category: Speaker sets

Type: User guide

This manual is also suitable for

Community ENT220 is a versatile two-way column point source system designed for both indoor and outdoor applications. It features a compact and lightweight design with a modern, unobtrusive appearance that blends into any décor. The ENT220 delivers exceptional sound quality with its advanced features, highly-focused dispersion patterns, and weather-resistant construction. It is ideal for a wide range of applications, including music playback, public address, and speech reinforcement in venues such as restaurants, bars, hotels, and conference rooms.

1 – ENTASYS 200 Case Studies

E SERIES

ENTASYS 200

VERSATILE TWO-WAY COLUMN POINT SOURCE SYSTEMS

Application Guide

Part 2: Case Studies

ENTASYS 200 Case Studies – 2

INTRODUCTION AND FEATURES

ENTASYS 200 column loudspeakers are innovative products oering entirely

new possibilities for solving dicult acoustical problems with ease, both

indoors and outdoors. Available in four sizes, the ENTASYS 200 models

have been expertly engineered to serve the wide range of applications

routinely encountered by professional sound contractors. Possessing

advanced features, highly-focused dispersion patterns, weather resistant

construction, and most importantly sonic excellence, ENTASYS 200 columns

make installations not only fast and simple, but as functionally eective as

possible.

The modern, unobtrusive appearance of ENTASYS 200 columns means they

will blend into virtually any room décor without calling undue attention to the

technology behind the sound. All models can be ordered in either medium-

gloss black or medium-gloss white ﬁnishes. They may also be ﬁeld-painted

to match a speciﬁc color scheme or room design.

Each ENTASYS 200 model includes an appropriately-sized mounting bracket,

a built-in 70V/100V autoformer for constant voltage applications, and an

integral safety rigging point. Accessories include a universal mounting kit

for use with third-party mounting brackets, and a stand adapter kit with

an attachable tripod-stand mount that serves double duty as a handle for

portable usage.

INTRODUCTION AND OVERVIEW

QUICK PRODUCT OVERVIEW

The ENTASYS 200 family begins with two small column loudspeakers, the

ENT203 and ENT206. Powerful, but exceptionally unobtrusive, these models

are intended for use as foreground and background music, ﬁll loudspeakers,

‘delay’ support of larger systems, and as the primary PA in small environments.

The two larger models, the ENT212 and ENT220, are designed for use in medium

to medium-large spaces. Highly eective when used as the main system,

they can also be matched up with conventional point source loudspeakers,

such as the I SERIES or V SERIES models. Their very narrow vertical dispersion

precisely directs sound to speciﬁc room regions, thereby complementing the

inherently broader dispersion of point source loudspeakers.

All models may easily be augmented with subwoofers. Subwoofers will

signiﬁcantly extend the low frequency response of an ENTASYS 200 system,

while also increasing the power output capability of the ENTASYS columns. A

Community dSPEC loudspeaker processor, equipped with built-in optimized

factory presets for each ENTASYS model, is the perfect complement to any

ENTASYS 200 system installation, whether used with or without subwoofers.

The ENTASYS 200 models provide a modern solution to the age old problem

of directing sound where it is needed - and nowhere else. By reducing room

reﬂections, musical clarity and speech intelligibility are greatly improved.

CASE STUDIES

We have depicted computer

generated sound-coverage plots for

a variety of common applications.

Each coverage plot reveals the real-

world dispersion capabilities of an

ENTASYS 200 system in a speciﬁc

environment. By studying the

coverage patterns in this booklet, it

will be possible to design systems

for alternate environments that

are similar to the ones depicted.

We do recommend using computer

prediction whenever time and

budget permit.

Applications depicted:

Cafeteria – Gymnasium

Hotel Ballroom

Boardroom

House of Worship I

House of Worship II

Transit Station

Bar – Restaurant

COMMUNITY'S

TAG TEAM

We're here to help you!

Please contact Community’s

Technical Applications Group

(TAG) for any technical support

that you may need. The TAG

team can help select the best

product for each application

and assist in system design,

loudspeaker layout, acoustic

simulation analysis, and

information needed for

system commissioning.

Our TAG team can be reached

by phone at 610-876-3400 /

800-523-4934 or by email at:

TAGTEAM@communitypro.com.

3 – ENTASYS 200 Case Studies

A pair of ENT220s are shown ﬂanking the stage, one per side.

#1 CAFETERIA - GYMNASIUM

ENTASYS 200 Case Studies – 4

Above is a 3D transparent view of the room conﬁgured for cafeteria usage.

Below is the same room reconﬁgured for gymnasium use.

#1 CAFETERIA - GYMNASIUM (continued)

5 – ENTASYS 200 Case Studies

The computer model shown above depicts SPL throughout the room, almost perfectly uniform.

The model applies equally to the cafeteria and the gymnasium room conﬁgurations.

The computer model shown below depicts the predicted sound pressure levels

(SPL) from the front of the room to the rear of the room. The vertical bar to the

right of the rendering correlates volume level in dB with the colors shown in the

computer model.

This design is based on a single pair of ENT220s located on each side of the

stage house. Note how the volume levels are not only consistent, but virtually

identical throughout the room, due to the ENT220 column loudspeaker’s unique

properties.

A larger room equipped with bleachers may require additional column

loudspeakers facing the audience members, the location of which would be

based on the speciﬁc room geometry.

If track playback of music, or a live musical performance is anticipated, one

or two subwoofers should be included in the system design. They should be

located in close proximity to the column loudspeakers in order to achieve good

summation throughout the crossover region.

During installation and commissioning, the downward tilt of the column

loudspeakers should be carefully adjusted to avoid excess sonic energy from

reﬂecting o of the rear wall surfaces.

SPL

Range

#1 CAFETERIA - GYMNASIUM (continued)

ENTASYS 200 Case Studies – 6

ENTASYS 200 column loudspeakers are well suited for use in ballrooms, junior ballrooms, as well as small, medium and

large meeting rooms. Because such venues often have high ceilings, speech intelligibility will be enhanced by keeping

sonic energy directed to the audience members and away from the ceiling surfaces.

In smaller rooms, a single pair of ENT212s ﬂanking the stage will usually suce, and can be augmented with a subwoofer

if live music or track playback is part of the anticipated program material. In medium sized rooms, a pair of ENT220s

is a more appropriate choice, again augmented by a subwoofer, if needed. In large rooms it is recommended to include

ENT203s or ENT206s, possibly as many as three or four pair, located on the side walls towards the middle and middle-

rear of the room, and fed by a delay line. This will improve the front-to-rear coverage uniformity.

Almost all ballrooms can be reconﬁgured quickly from classroom-style seating to banquet-style seating, and often

the Head Table will be placed at the side of the room instead of at the front. This will require a second set of column

loudspeakers positioned so that they ﬂank the Head Table, and usually an additional subwoofer. It’s very important

that the sonic energy emanates from where the presentation is originating.

#2 TYPICAL HOTEL BALLROOM

7 – ENTASYS 200 Case Studies

The computer model shown below depicts the predicted sound pressure levels

from the front of the room to the rear of the room, and also includes the levels

on the stage. The vertical bar to the right of the rendering correlates level in dB

with the colors shown in the various sections of the room.

There are two key points of interest:

First, the sound pressure level on the stage is much lower than the sound

pressure level in the room, by about 10 dB. Only at the front of the stage does

the level begin to pick up slightly. This indicates that feedback will be well

controlled, and that lecturers and musicians on stage will hear very little spill

from the ENTASYS 200 column loudspeakers. (Note: the column loudspeakers

are installed on the architectural pillars located second from the front of the

room, downstage from the stage house. As can be seen in the rendering they are

unobtrusive, blending in well with the room décor).

Second, the uniformity of level from the front of the room to the rear of the room

is exceptionally even, deviating by only a few dB. This ensures that audience

members who are seated towards the front will not be overpowered by excessive

volume, while those seated in the rear of the room will not be struggling to hear

properly.

A larger room or a deeper room may require supplemental delay loudspeakers,

such as ENT206s. These would be located on pillars part way into the room,

about ﬁve or six positions on pillars from the front.

During installation and commissioning, the downward tilt of the column

loudspeakers should be carefully adjusted to avoid excess sonic energy from

reﬂecting o of the rear wall surfaces.

SPL

Range

#2 TYPICAL HOTEL BALLROOM (continued)

A pair of ENT212s are located on the pillars that are second from the front, one per side.

ENTASYS 200 Case Studies – 8

A pair of ENT212s ﬂank the large video screen at the end of the room, while three

ENT203s are used for additional coverage in the adjacent hospitality area.

#3 BOARDROOM

9 – ENTASYS 200 Case Studies

Above is a 3D transparent view of the Boardroom and the adjacent hospitality area.

Below, the computer model depicts sound pressure level (SPL) throughout the room.

This design is based on a pair of ENT212s that ﬂank the large video screen at the end of the room, supported by three

ENT203s in the hospitality area. If the hospitality area is not acoustically isolated from the main meeting room, then it

is strongly recommended that the ENT203s’ each be delayed, so as not to produce conﬂicting arrival times that could

harm intelligibility.

Modern business presentations are often accompanied by video productions with dynamic soundtracks; if such program

material is anticipated, a subwoofer should be included in the system design located under the large video screen.

During installation and commissioning, the downward tilt of the column loudspeakers should be carefully adjusted to

avoid excess sonic energy from reﬂecting o of the rear wall surfaces.

SPL

Range

#3 BOARDROOM (continued)

ENTASYS 200 Case Studies – 10

The view above shows two of the four ENTASYS FRs (see left side). The view below shows one of the

front ENTASYS FRs and the ENT206 facing the side pews.

This example is of a medium sized church with seating on the main ﬂoor, a small balcony in the rear, and additional

seating on the left and right sides of the ﬂoor that face inwards. ENTASYS 200 column loudspeakers are ideally suited

for coverage in rooms of this type. The dierent sized models can be selected to provide appropriate coverage in the

various areas of the sanctuary, while being practically invisible to the worshippers.

In this example, a pair of Community’s ENTASYS FRs have been located on each side of the stage to cover the front four

pews on the main ﬂoor and to provide ‘imaging’ so that the attention is drawn to the front of the church. A second pair

of ENTASYS FRs are located on the side walls of the church, used with a delay line, for coverage from the ﬁfth row of

pews rearward.

A pair of ENT206s, one per side, provide coverage to the pews that face inward. A second pair of ENT206s are located

at either side of the balcony, also used with a delay line. This conﬁguration provides near-perfect uniformity in level, as

shown in the computer generated rendering on the following page.

#4 HOUSE OF WORSHIP I

11 – ENTASYS 200 Case Studies

The above view shows the two ENT203s that cover the balcony, one on either side.

Below is a 3D rendering depicting highly uniform coverage throughout the front, sides, and rear.

SPL

Range

#4 HOUSE OF WORSHIP I (continued)

ENTASYS 200 Case Studies – 12

The above view shows the four ENT212s that cover the main ﬂoor and the wraparound balcony.

Below is a dierent perspective that depicts the somewhat complex room geometry.

This example is of a small-sized church of 80 seats. The room geometry is somewhat complex with forward-facing

pews on the main ﬂoor, and a balcony that wraps around the side and the rear. On both sides the pews in the balcony

face inward. ENTASYS 200 column loudspeakers are ideally suited for coverage in rooms of this type, while being

practically invisible to the worshippers.

In this example, a pair of ENT212s have been positioned on each side of the stage that cover all twelve pews on the main

ﬂoor. A second pair of ENT212s are located directly above the ﬁrst pair, about two meters higher. This second pair of

loudspeaker columns covers the full wraparound balcony.

The conﬁguration provides good uniformity in level from a simple system that’s easy to install. The computer generated

simulation on the following page reveals a front to rear volume level dierential of about 6dB.

#5 HOUSE OF WORSHIP II

13 – ENTASYS 200 Case Studies

Above is a 3D transparent rendering of the building.

Below is a computer simulation showing very good level uniformity throughout the main ﬂoor and wraparound balcony.

SPL

Range

#5 HOUSE OF WORSHIP II (continued)

ENTASYS 200 Case Studies – 14

The above view shows four of the six ENT220s that cover the Departure Lounge.

Below, in the Arrivals Area, the six ENT206s are visible along the wall to the right of the tracks.

The train station in this example utilizes construction that is common to many; the walls are typically concrete, brick,

or cement block, the ﬂoor is never carpeted, and the ceiling is either domed glass (as shown), concrete, or metal. The

result is a formula for signiﬁcant acoustical reﬂections. Traditional paging systems are often entirely unintelligible in

some, or even all, sections of many stations. Yet, it is very important for travelers to clearly hear announcements of

track changes to stay on schedule, and even more important to hear instructions if an emergency occurs and they are

directed to egress towards a certain exit.

By providing highly-directed sound that keeps harmful reﬂections from bouncing o the walls, ﬂoor and the ceiling, and

scattering throughout the room, the ENTASYS 200 system depicted in this example is capable of providing excellent

intelligibility, far superior to that of the oft-utilized paging horn solution. As a side beneﬁt, ENTASYS 200 columns can

provide the additional beneﬁt of supporting the video screens with high quality audio, and/or background music.

#6 TRANSIT STATION

15 – ENTASYS 200 Case Studies

Above is a 3D transparent view of the building.

Below is a acoustical computer simulation depicting highly uniform coverage throughout.

The system consists of six ENT220s in the Departure Lounge, the larger of the two sections. The columns are located

on the wall that faces the train tracks; each pair ﬂanking one of the three video screens.

On the opposite side of the tracks, in the smaller Arrivals area where passengers tend to move quickly towards the

exits, coverage is handled by six ENT206s. In Arrivals there are no video screens in this example.

The key to providing uniform coverage and intelligibility is to critically determine the optimal height and downward tilt

of the ENTASYS column loudspeakers. Computer simulation is highly recommended for potentially problematic rooms

of this type.

The computer model shown below indicates exceptionally even coverage throughout the room, and enough SPL (sound

pressure level) to overcome the noise of approaching and departing trains.

SPL

Range

#6 TRANSIT STATION (continued)

ENTASYS 200 Case Studies – 16

The subwoofers are located directly over the video screens in close proximity to the ENT206s, thereby ensuring that the

subwoofers and the columns sum properly, and that the composite soundﬁeld will be well-correlated.

#7 BAR - RESTAURANT

17 – ENTASYS 200 Case Studies

Pictured above is the bar area, again with a subwoofer installed over the video screen.

Below is a 3D transparent rendering of the building.

#7 BAR - RESTAURANT (continued)

ENTASYS 200 Case Studies – 18

ENTASYS 200 column loudspeakers are an excellent choice for bar and restaurant

environments due to their superior sound quality, their ability to project sound at

a distance without overpowering patrons who are seated nearby, and because

they come in a range of sizes—but with a common sonic signature. Larger

models, often used to ﬂank a video screen (as shown in this example), provide

the primary source for clarity and intelligibility when used to reproduce video

soundtracks, foreground music playback, and live presentations.

Smaller models can provide additional coverage in those seating areas that are

located away from the coverage region of the primary source. Used in conjunction

with one another, the sound levels in the room can be adjusted to be uniform and

even throughout, as depicted in the computer model shown below. Alternately,

if one or more quiet areas are intended for conversation, the ENTASYS 200 can

easily fulﬁll that requirement as well, by using separate ampliﬁer channels and

adjusting levels appropriately, or by using taps on the built-in autoformer.

Modern bars and restaurants, especially those catering to a younger crowd,

will almost always desire subwoofers, to provide extended bass response.

Subwoofers should be kept as close in proximity as possible to the column

loudspeakers, thereby supporting proper summation through the crossover

region, and a well correlated composite soundﬁeld.

Establishments that have several distinct zones are excellent candidates for

employing a Community dSPEC loudspeaker controller to complement the

system installation. With dSPEC, level changes in dierent zones can be preset

for dierent times of day, or dierent events, and altered with the touch of a

button on a wall switch without requiring any audio knowledge. Overall level can

be controlled as well, within a range of preset parameters, also by means of a

remote wall-mounted volume control. The full set of dSPEC's many features can

be found at communitypro.com.

The computer model above depicts the sound pressure level (SPL)

throughout the room showing only fractional deviation from being perfectly uniform.

SPL

Range

#7 BAR - RESTAURANT (continued)

19 – ENTASYS 200 Case Studies

The chart below shows the typical distances at which each of the four models of ENTASYS 200 loudspeakers can be

expected to provide excellent quality results. Keep in mind, however, that windy conditions, as well as dierences in

temperature, humidity and elevation, will all play a role in how a given loudspeaker performs, especially at distances.

This is known as atmospheric absorption and diraction; the further the distance from the loudspeaker to the listener,

the greater the eect that atmospheric conditions will have on performance.

EFFECTIVE DISTANCE COVERAGE COMPARISON

SUMMING IT UP

The examples in this Application Guide are intended to represent a range of typical usages for ENTASYS 200 column

loudspeakers. In no way do they cover all possible applications; there are numerous others such as theatres, auditoria,

resorts, theme parks, retail spaces, press boxes, ballpark concourses..., all limited only by the imagination.

Acoustical computer modeling is a powerful tool that helps the sound system designer make informed choices when

determining the appropriate number of loudspeakers to use, where they should be located for maximum coverage

and uniformity, selecting optimal pan-and-tilt angles, and predicting maximum SPL.

The Case Studies are presented (and intended) as “food for thought,” rather than hard and fast designs that must be

adhered to. Thus, the basic design principles and performance expectations can be utilized for many applications

and room styles that are not directly covered in this guide. The additional technical information is oered for better

understanding of directivity and focusing.

By studying the design examples and allowing for variations in room geometry, it will be possible to make qualiﬁed

design decisions. We do recommend utilizing predictive computer modeling to achieve the best possible results,

whenever possible.

Our TAG Team (Technical Applications Group) stands ready to answer questions and assist with design and installation

recommendations; however, TAG is not intended to replace the work of qualiﬁed consultants nor that of experienced

contractors.

TAG Team members can be reached by phone at 610-876-3400 / 800-523-4934 or contacted via email at

TAGTEAM@communitypro.com.

ENTASYS 200 Case Studies – 20

v:8OCT2014

Community Professional Loudspeakers

333 East Fifth Street, Chester, PA 19013-4511 USA

Phone (610) 876-3400 • Fax (610) 874-0190

communitypro.com

Community ENT220 User guide

Brand: Community

Model: ENT220

Category: Speaker sets

Type: User guide

This manual is also suitable for

Download PDF

report

Community ENT220 User guide

This manual is also suitable for

Community ENT220 User guide

Related papers

Other documents